A DiabloSport Modified PCM allows you to unlock the performance potential of your vehicle. In addition to this modified PCM, you will need a DiabloSport Tuning Device such as an inTune i3 or Trinity T2 in order to install a performance tune. Note: DiabloSport Modified PCMs are not compatible with other tuning brands at this time. NOTE: ON 2021 MODEL YEAR VEHICLES, YOU MUST SAVE YOUR STOCK CALIBRATION WITH YOUR TUNING DEVICE BEFORE REMOVING THE STOCK PCM FROM THE VEHICLE. PLEASE REFER TO THE INSTRUCTIONS THAT COME WITH YOUR UNLOCKED PCM.